token property
Token is the crypto-random signing capability for this recipient. It is the entire credential their signing endpoint accepts, so treat it as a secret and hand it only to them: the signing link is built from it.
Please note: This property should have been non-nullable! Since the specification file does not include a default value (using the "default:" property), however, the generated source code must fall back to having a nullable type. Consider adding a "default:" property in the specification file to hide this note.
Implementation
String? token;